JPH09253399A - Fixed position pile-up device for cloth kind - Google Patents

Abstract

PROBLEM TO BE SOLVED: To successively drop and pile up respective cloth kinds at the same position by connecting the respective ends of a pair of bent links respectively in a symmetrical shape to a set of two opening and closing plates and opening and closing both opening and closing plates by simultaneously operating the respective bent links by one' extension and contraction cylinder. SOLUTION: A folded cloths kind Y' such as a towel or the like folded into four at a folding device part is transferred to the side of a dropping device by a carrying conveyor 2. The dropping device is provided with the two opening and closing plates 71 and both opening and closing plates 71 are simultaneously opened and closed through a pair of the bent links (composed of links 72 74) in the symmetrical shape by the extension and contraction operations of the extension and contraction cylinder 75. Then, when the extension and contraction cylinder 75 is turned to a most extended state and the opening and closing plates 71 in a horizontal posture (closed posture) when the extension and contraction cylinder '75 is in a' most contracted state are opened to an almost vertical posture, both ends Yd of the folded cloths kind Y' are simultaneously detached from the tips of the respective opening and closing plates 71 and thus, it is dropped and piled up at the fixed position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed-position fabric laminating apparatus for laminating rectangular fabrics such as towels at a fixed position.

[0002]

2. Description of the Related Art In a laundry factory, cloths such as towels are washed with a large amount of water, dehydrated and dried, and then, for example, as shown in FIG.
As shown in FIG. 5, the cloth Y is stretched and folded in the longitudinal direction into about four folds, and an appropriate number of the folded cloths Y ′ are stacked to form a laminated body Y ″.

By the way, as a cloth folding machine for automatically folding cloth such as a towel, there is a conventional one as shown in FIG. The conventional cloth folding machine shown in FIG. 18 has a conveyor 2 for conveying cloth Y in a stretched state.
And the cloth Y at the end 22 of the conveyor 2
A folding device 5 for folding, a fixed-position laminating device for sequentially dropping and stacking four-folded folding cloth Y ′ (FIG. 17) downward at a fixed position, and a predetermined number of folding cloths Y ′.
And a carry-out conveyor 16 for sequentially moving the stacked body Y ″ stacked by 1 pitch A. The conveyor 2 is continuously driven by a drive device (motor) 23.

The folding device 5 includes a terminal portion 2 of the conveyor 2.
The feeding conveyor 50 is installed in the vicinity of the lower part of the two, and the pushing device 51 for pushing the folded portion of the cloth Y is provided between the two conveyors 2, 50. The pushing device 51 swings the pushing plate 53 back and forth with the telescopic cylinder 54, and feeds the folded back portion (two sheets stacked) of the cloth folded back on the front end portion of the pushing plate 53 with the transport conveyor end portion 22. It is adapted to be pushed into the gap between the conveyor 50 and the starting end.

Further, the cloths fed between the two conveyors 2 and 50 are transferred to the right by the frictional force of the lower running portion of the conveyor 2 in a four-fold state (folded cloth Y '), Layers are successively stacked on the carry-out conveyor 16 by the fixed position stacking device.

As shown in the enlarged view of FIG. 19, the fixed position laminating apparatus is provided with a dropping device 7 and a stop device 76 for stopping the folding cloth Y'at a fixed position of the dropping device 7 portion.

In the drop device 7, two opening / closing plates 71, 71 are connected to each other via swing arms 72a, 73a and one rod 74a.
The two telescopic cylinders 75 are configured to be simultaneously opened and closed. That is, in the example of FIG. 19, each opening / closing plate 71,
In the closed state of 71, the swing arm 72a on the left side opening / closing plate 71 side
Is extended in the upper left 45 ° direction, while the swing arm 73a on the right side opening / closing plate 71 side is extended in the lower left 45 ° direction, and the tip ends of the swing arms 72a, 73a are connected by one rod 74a. are doing.

Further, as the stop device 76, a device in which a pressing plate 77 can be vertically swung by a telescopic cylinder 78 above the opening / closing plates 71, 71 is adopted. In this stopping device 76, the tip of the folding cloth Y ′ is provided with the opening / closing plates 71, 7
When a predetermined position on 1 is reached, it is detected by the detector 79, and the expansion / contraction cylinder 78 is extended on the basis of the detection signal to move the pressing plate 77 downward.
The folding cloth Y'is pressed and stopped with. The detection position of the detector 79 is set to a predetermined front position in consideration of the time lag until the pressing plate 77 is moved down to the pressing position after the detection signal from the detector 79 is issued. .

The conventional cloth folding machine shown in FIG. 18 is used as follows. That is, the working position (Fig. 1
At the right end position of 8), find both end portions of one side to be the front edge portion Ya of the cloth Y and spread them to the left and right with both hands, and place the cloth front edge portion Ya on the starting end portion 21 of the conveyor 2. Put. Then, since the transport conveyor 2 is running, the hanging parts Yc of the cloth are sequentially fed onto the transport conveyor 2. Then, when the front edge portion Ya of the cloth Y on the conveyor 2 reaches the conveyor end portion 22, it is detected by the detector 59, and after a predetermined timer based on the detection signal, that is, the cloth length 1 When the / 4 folded portion a (FIG. 17) reaches the upper end of the pushing plate 53, the telescopic cylinder 54 of the pushing device 51 is extended to swing the pushing plate 53 to the left. Then, the pushing plate 53 and the end portion 22 of the conveyer conveyor.
There is a gap between them, the intermediate part of the subsequent fabric is dropped into the gap, and when the 3/4 folding part c of the fabric Y reaches the pushing position, the telescopic cylinder 54 shrinks to push the pushing plate. At the tip of 53, the 1/4 fold portion a and the 3/4 fold portion c of the cloth Y are overlapped and pushed between the two conveyors 2 and 50. At this time, the 2/4 folding part b of the cloth Y is also folded to form a folded cloth Y ′ in a four-fold state. 4 between both conveyors 2, 50
The folding cloth Y ′ sent in the folded state is the falling device 7
Stopping device 76 when the upper and lower plates (71, 71) are reached
Is pressed from above by the holding plate 77 and stopped there, and then the telescopic cylinder 75 of the dropping device 7 extends to open the respective opening / closing plates 71, 71 downward as indicated by reference numerals 71c, 71c. The folding cloth Y ′ is dropped onto the carry-out conveyor 16. At this time, the carry-out conveyor 16 is stopped. At the work position, after the trailing edge portion Yb of the cloth Y placed on the transport conveyor start end portion 21 has completely passed over the transport conveyor start end portion 21, the next cloth Y can be placed, and the same operation is performed sequentially. And fold the subsequent cloth Y with the folding device 5.
Folding is performed, and the folding cloth is dropped from the dropping device 7 portion onto the folding cloth Y ′ on the carry-out conveyor 16 and laminated. Immediately below the drop device 7, a predetermined number of folding cloths Y ′ are provided.
When the sheets are stacked, the motor 17 of the carry-out conveyor 16 operates by a predetermined number of rotations to move the stacked body Y ″ to the discharge side by 1 pitch A.

[0010]

By the way, in the fixed-position laminating apparatus used in the conventional cloth folding machine shown in FIG. 18, as shown in FIG.
1, 71 are rocking arms 72a, 73a and one rod 74a
Are connected with each other and can be opened and closed at the same time by the extension operation of the telescopic cylinder 75. However, in this way, the swing arms 72a, 7 of each opening / closing plate 71, 71 are
In the case where 3a is connected by one rod 74a, when the telescopic cylinder 75 extends, while the left swing arm 72a rotates right from the original position to an angle of 45 °, the left swing arm 7a
The tip height (rod connecting portion) of 2a is displaced upward, while the tip height (rod connecting portion) of the right swing arm 73a is displaced downward. At this time, the rod 74a becomes larger than the original inclination angle, whereby the horizontal length of the rod 74a is changed from L ₁ (horizontal length of the original posture) to L ₂ (angle 4).
The horizontal length when rotated by 5 °) is changed (L ₁ > L ₂ ). In FIG. 19, θ ₁ is the angle 30
The angles θ and θ ₂ are 45 °. In this way, the left swing arm 7
In the range where 2a rotates right from the original position to an angle of 45 °,
The horizontal length of the rod 74a is gradually shortened, but when the horizontal length of the rod is changed (shortened) in this way, the rotation speed of the right swing arm 73a becomes slower than the rotation speed of the left swing arm 72a. As a result, the left and right opening / closing plates 71, 71
There will be a difference in the opening speed of. Incidentally, the left swing arm 72a and the left opening / closing plate 71a have an angle θ ₁ (angle 30
When the right swing arm 73a and the right side opening / closing plate 71a are rotated to a smaller angle θ ₁ ′ (for example, an angle of about 2).
4 °) only, and similarly, when the left swing arm 72a and the left open / close plate 71b rotate up to an angle θ ₂ (angle 45 °), the right swing arm 73a and the right open / close plate 71b rotate at an angle θ smaller than that. Only rotate ₂ '(eg about 38 °). In the range in which the left swing arm 72a rotates from the angle 45 ° displacement state to the angle 90 ° displacement state, the opposite action occurs and the opening speed of the right side opening / closing plate 71 becomes faster than the opening speed of the left side opening / closing plate 71. In the 90 ° angle displacement state, the left and right opening / closing plates 71, 71 are opened by the same angle.

By the way, both the opening and closing plate 71 cloths folded and placed on Y 'is in the middle of both the opening and closing plate is gradually opened, such as code Y _1' (30 ° open) or code Y ₂ In this state (when opened at 45 °), the folding cloth Y ₂ ′ will fall from the open / close plate when both open / close plates are opened up to an angle of about 45 ° indicated by reference numerals 71b and 71b.
However, if there is a difference in opening speed between the two opening / closing plates 71, 71, when the folding cloth Y ₂ ′ falls from the opening / closing plates,
There is a difference between the right edge and the left edge of the folding cloth Y ₂ ′ when the folding cloth Y ₂ ′ is detached from the opening / closing plate.
The position is likely to vary when is dropped on the carry-out conveyor 16. That is, in the stacked body Y ″ stacked on the carry-out conveyor 16, the edges of the folding cloths Y ′ are not aligned neatly, which causes a problem of poor appearance.

In view of the above-mentioned problems of the fixed-position laminating apparatus in the conventional cloth folding machine, the present invention enables the cloths to be sequentially dropped from the opening / closing plate to the exact same position, whereby the laminated body is formed. The purpose is to be able to neatly align the edges of.

[0013]

The fixed-position laminating apparatus of the present invention is suitable for sequentially laminating a plurality of relatively small-area cloths, such as towels, which are folded in a fixed position. It is used by being incorporated in, for example, the following cloth folding machine.

That is, this cloth folding machine has a conveyor for conveying cloth such as a towel in a stretched state, a folding device for folding the cloth in four at the end of the conveyor, and a folding device for folding the cloth in four. A fixed position laminating device that sequentially drops and stacks the folded cloths downward at a fixed position, and a carry-out conveyor that sequentially moves the laminated body in which a predetermined number of the folded cloths are stacked by 1 pitch A. Then, this cloth folding machine puts the cloth in a stretched state on the start end of the conveyer conveyor so that the cloth is folded into four by the folding device at the end of the conveyer conveyor, and the folded cloth is fixed-position laminating device part. It is possible to post-deliver it until it is stacked one after another.

The cloth fixed-position laminating apparatus of the present invention can transfer the cloth conveyed by the conveyor 2
A set of opening and closing plates, a stopping device that stops the cloth at a fixed position across both opening and closing plates, and an opening and closing device that opens and closes each opening and closing plate at the same time are provided.

Each of the opening and closing plates is installed so that the abutting side thereof can swing up and down to open and close. That is, each opening / closing plate is pivotally attached at its end on the side opposite to the abutting side, and the opening / closing plates are pivotally opened / closed between a closed state (horizontal posture) and an open state (vertical posture). I am trying to make it possible.

The opening / closing device is composed of a pair of bilaterally symmetrical bending links respectively connected to the respective opening / closing plates, and one telescopic cylinder for simultaneously operating both the bending links. One end of each of the left and right bent links is connected to each opening / closing plate, and the other end is connected to the telescopic portion of the telescopic cylinder. Then, in this opening / closing device, when the telescopic cylinder is operated, the respective bending links bend and extend in the same shape, so that the respective opening / closing plates can be opened / closed simultaneously and at a constant speed.

[0018]

DETAILED DESCRIPTION OF THE INVENTION The embodiment of the present invention shown in FIGS. First, with reference to FIGS. 1 to 3, the overall configuration of a cloth folding machine that employs the fixed-position laminating apparatus of the present embodiment will be described. This cloth folding machine has a relatively small area such as a towel. The rectangular cloth Y is folded in four, and an appropriate number of the folded cloths are stacked and automatically taken out sequentially. Further, in the cloth folding machine of this embodiment, two kinds of towels having different sizes (for example, a face towel and a bath towel) can be automatically selected and stacked at different positions.

This cloth folding machine has left and right side plates 11, 1
1 and the side plate 11 between the side plates 11 and 11.
Of the conveyor 2 installed in a state of traveling in parallel with the feeding device 3, the supply device 3 for supplying the cloth Y to the starting end portion 21 of the conveying conveyor 2, and the cloth Y supplied on the conveying conveyor starting end portion 21. A spreading device 4 for spreading the hanging part Yc vertically and horizontally, a folding device 5 for folding the cloth Y conveyed on the transport conveyor 2 at the transport conveyor end portion 22 into four, and four folding devices. Dropping devices (at two locations) 7 and 8 for sequentially dropping the folding cloths Y ′ and the folding cloths Y ′ dropped from the dropping devices 7 and 8 receive the folding cloths Y ′ in a predetermined manner. Equipped with unloading conveyors (two units) 16 and 18 for transferring the stacked bodies Y ″ to the discharge side by 1 pitch A when the number of stacked sheets is one.
The fixed position laminating apparatus, which is the main part of the claims of the present application,
The dropping devices 7 and 8 are mainly used.

The conveyor 2 uses a large number of narrow belts arranged in parallel at a small interval. Further, the transport conveyor 2 has a length in the transport direction (a length from the start end 21 to the end 22) of about 1600 to 1700 mm and a width of 800 to 900.
The thing of about mm is adopted. The transport conveyor 2 is continuously driven by the motor 23 at a speed of about 30 m / min. In addition, this conveyor 2
The design of the length and width can be freely changed, and the traveling speed of the conveyor 2 can be freely set.

The feeding device 3 for feeding the cloth onto the conveyer conveyor 2 includes a holding device 30 capable of detachably holding the front edge portion Ya of the cloth Y, and an operation of advancing and retracting the holding device 30 in the conveying direction. It has an advancing / retreating drive device 36.

As shown in FIGS. 4 and 5, the holding device 30 is a relatively thin box-shaped mount 31 having a rectangular shape elongated in the width direction of the conveyor 2 and having a hollow interior, and the mount 31.
It has an exhaust fan 33 that discharges the air inside.
The front half 31a of the mount 31 is considerably thinner than the rear half 31b. The upper surface plate of the mounting table front half portion 31a is inclined downward toward the front side, and the tip of the mounting table front half portion 31a is thin, for example, about 15 mm.
Intake holes 32, 32 made up of a large number of small holes are formed on the upper surface plate of the first half 31a of the mounting table. The intake holes 32 are provided on almost the entire front half 31a of the mounting table, but when used, close to the center of the mounting table except for the width of the front edge of the cloth Y to be processed. You can also leave it. The upper surface of the first half 31a of the mounting table serves as a holding portion that sucks and holds the front edge Ya of the cloth Y. In addition, a total of four air exhausters 33, 33, ...
Are attached at predetermined intervals. In this holding device 30, when the respective air exhausters 33, 33, ... Are operated, the air in the mounting table 31 is removed, so that a large number of intake holes 32, 32 ,. It is supposed to be done. The cloth suction force (that is, the holding power of the cloth leading edge portion Ya) by the holding device 30 can hold and hold the cloth Y, and as described later, the cloth hanging portion Yc is on the transport conveyor starting end portion 21. It is set to such an extent that the cloth leading edge portion Ya can be easily separated from the suction surface of the holding device 30 by the tension force generated when the holding device 30 comes into contact with. Note that, in FIG. 5, arrows indicate the flow of air when the blower 33 is operating.

This holding device 30 is provided on the machine frame side plate 11, with guide devices 13 and 13 on the left and right sides of the holding device 30 at a position close to the starting end 21 of the conveyor.
I have 11 guide me. And this holding device 30
Is, for example, 5 to 10 from the upper surface of the transport conveyor starting end portion 21.
The start end portion 2 of the conveyor 2 is located at a position separated by about mm.
It can move back and forth in parallel with the running surface near 1. The distance between the lower surface of the holding device 30 and the upper surface of the conveyor 2 is such that the stretched cloth Y can pass through it.
It is preferable to make it as small as possible.

The advancing / retreating drive device 36 employs two telescopic cylinders on the left and right in this embodiment. The advancing / retreating drive devices 36, 36 move the holding device 30 between the front standby position shown in FIG. 6 and the retracted position shown in FIG.
It is designed so that it can be driven back and forth within a range of about m. When the holding device 30 is in the standby position (FIG. 6), the front end of the holding device 30 is, for example, more
When the holding device 30 is in the retracted position (FIG. 8), it is projected to the front side by about 200 to 300 mm.
The front end portion of the holding device 30 is located behind the start end portion 21 of the conveyor by, for example, about 400 to 300 mm.

In this embodiment, the advancing / retreating drive devices 36, 36 are adapted to move the holding device 30 back and forth at a speed which is about twice the transfer speed of the transfer conveyor 2 (about 60 m / min). Further, the advancing / retreating drive devices 36, 36 are operated by the cloth Y when the holding device 30 is in the standby position shown in FIG.
When the front edge portion Ya of is placed on the upper surface of the mounting table front half portion 31a,
The reduction operation is performed by the signal from the detector 39 that detects it,
After the holding device 30 is retracted to the retracted position shown in FIG. 8 through the intermediate retracted position shown in FIG. 7, it is immediately extended by a signal from a detector (for example, a limit switch (not shown)) that detects the retracted position. The holding device 30 operates so as to advance to the original standby position shown in FIG. In this embodiment, the reduction side start of the advancing / retreating drive device 36 is
When the cloth front edge portion Ya is placed on the placing table front half portion 31a, a signal from a detector 39 for detecting it is used, but it is started to the reduction side by a foot switch by an operator. You may do it.

The supply device 3 of this embodiment operates as follows. At the start of the operation, as shown in FIG. 2, the holding device 30 is standing by at the standby position on the front side, the conveyor 2 is continuously running, and the exhaust fan 33 of the holding device 30 is continuously operating. . From this state, as shown in FIG. 6, when the front edge portion Ya of the cloth Y is placed on the mounting plate front half portion 31a of the holding device 30, the cloth leading edge portion Ya is sucked through the intake holes 32. Is adsorbed on the first half 31a of the mounting table. At that time, the detector 39 detects that the cloth leading edge portion Ya is placed on the mounting table 31, and the advancing / retreating drive devices 36, 36 are reduced by the detection signal. Then, as shown in FIG. 7, when the front edge portion of the holding device 30 retracts rearward from the transport conveyor starting end portion 21, the hanging portion Y of the cloth Y is dropped.
Although c comes in contact with the starting end portion 21 of the conveyer conveyor (a frictional force is generated), at that time, since the retreating speed of the holding device 30 is significantly faster than the traveling speed of the conveyer conveyor 2, the suction of the cloth leading edge portion Ya is performed. Tension is generated between the portion and the contact portion of the transport conveyor starting end portion 21. At this time, the starting end portion 2 of the conveyer conveyor is attracted by the suction force with respect to the cloth leading edge portion Ya.
The frictional force due to the contact with 1 increases, and the tension force applied to the cloth causes the cloth front edge Ya to be automatically separated from the suction portion of the holding device 30 as shown in FIG.
Then, the cloth front edge portion Ya separated from the holding device 30 is
As shown by the reference numeral Ya ′ in FIG. 8, the entire cloth Y falls on the conveyor 2 and is fed later on the conveyor 2. or,
The advancing / retreating drive device 36.36 retracts the holding device 30 to the retracted position (for example, the state of FIG. 8), and then the holding device 3
The 0 is immediately moved forward and returned to the original standby position as shown in FIG. In addition, the holding device 3
When 0 is returned to the original standby position, as shown in FIG. 9, the trailing edge portion Yb side of the cloth Y is still on the transport conveyor start end portion 2
1 may remain, but in this feeder 3,
The cloth Y supplied to the side of the conveyor 2 has a leading edge Ya.
Since it suffices to place the cloth on the holding device 30, even if the previous cloth Y remains on the starting end portion 21 of the conveyer, the next cloth supply work (the work for mounting the cloth front edge portion Ya) will be hindered. Absent.

Immediately below the starting end portion 21 of the conveyor 2,
A stretching device 4 is provided for stretching the hanging portion Yc of the cloth Y held on the first half 31a of the holding device 30 vertically and horizontally. The spreading device 4 is provided with a vertically-oriented storage box 41 having an opening 41a immediately below the starting end portion 21 of the transport conveyor, and an intake device (exhaust fan) 42 for sucking air in the storage box 41 downward. There is.
The opening 41a of the storage box 41 is located at a position spaced downward from the starting end 21 of the conveyor by, for example, about 300 mm.

At the upper end of the storage box 41, the hanging part Yc of the cloth Y held by the holding device 30 is stored.
A feeding roll 44 for feeding the inside of the sheet 1 is provided. The feed roll 44 is installed laterally in the left-right direction when viewed from the working position at the upper end of the front outer wall of the storage box 41. Further, the feeding roll 44 is
As shown in FIG. 6, the holding device 30 in the standby position is positioned behind the position immediately below the front edge of the holding device 30 and slightly ahead of the position immediately below the transport conveyor starting end 21. Therefore, FIG.
As shown in FIG. 7, in the state where the holding device 30 in the standby position holds the cloth leading edge portion Ya, the hanging portion Yc of the cloth Y is separated from the feeding roll 44, while as shown in FIG. When the front edge portion of the holding device 30 is retracted rearward from the transport conveyor starting end portion 21, the cloth hanging portion Yc comes into contact with the feeding roll 44. The sending roll 44 is
The motor 45 (FIG. 3) can rotate at high speed in the arrow direction (the peripheral speed of the feeding roll 44 is several times faster than the retreat speed of the holding device 30). The rotation of the feeding roll 44 may be continuously performed, but may be intermittently performed in conjunction with the expansion / contraction operation of the advancing / retreating drive device 36. In that case (in the case of intermittent operation), for example, when the advancing / retreating drive device 36 is contracted, the feed roll motor 45 is actuated, and the motor 45 is actuated after a predetermined timer (or after the advancing / retreating drive device 36 makes one reciprocation). Should be stopped.

The spreading device 4 operates as follows.
That is, in the spreading device 4, the inside of the housing box 41 is continuously sucked (reference numeral W) by the suction device 42, and when the holding device 30 holding the cloth leading edge portion Ya retracts, the feed roll 44 is It is rotating at high speed in the direction of the arrow. Then, when the holding device 30 is moved backward from the state of FIG. 6 and the cloth hanging portion Yc comes into contact with the feeding roll 44 as shown in FIG. 7, the feeding roll 4 is moved at the backward speed of the holding device 30.
Since the peripheral speed of 4 is several times faster, the cloth hanging part Yc is fed into the storage box 41 so that the cloth hanging part Yc is shown by a chain line (symbol Yc ') by the frictional force between the cloth hanging part Yc and the feeding roll 44. Like Further, at that time, since the air in the storage box 41 is sucked downward, the storage box 41
The cloth hanging portion Yc fed inside is flapped back and forth, and is stretched vertically and horizontally (FIG. 8). Therefore, when such a spreading device 4 is used, when the cloth Y is supplied onto the transport conveyor starting end portion 21, the cloth hanging portion Y is dropped.
There is no need to manually spread c.

At a suitable place near the start end 21 of the conveyer (in the example shown, a position immediately below the start end 21 of the conveyer),
A detector 49 is provided which cooperates with a detector 59 on the side of the transport conveyor terminal end 22 to be described later to provide data for calculating the length of the supplied cloth Y. This detector 4
9 is a cloth Y moving upward on the starting end portion 21 of the conveyor.
The trailing edge portion Yb is detected to pass therethrough, and this detector 49 is referred to as a trailing edge portion detector in the following description. still,
The operation of the rear end detector 49 will be described later.

A cloth Y placed on the starting end portion 21 of the conveyor.
Is conveyed to the terminal end 22 of the transfer conveyor 2 in the stretched state.
A folding device 5 for folding is provided. As shown in FIGS. 10 to 14, the folding device 5 includes a transport conveyor terminal end portion 22, a feeding conveyor 50 installed near the lower end of the transport conveyor terminal end portion 22, and a transport conveyor terminal end portion 22. A pushing device 51 for pushing the folded portion of the cloth Y into the pushing portion S between the start ends of the feeding conveyors 50, and a pushing device 6 for pushing the proper place of the cloth Y to the pushing plate 53 of the pushing device 51 are provided. are doing.

The infeed conveyor 50 is installed substantially parallel to the lower surface side traveling portion 2a of the transport conveyor 2 from a position immediately below the end portion 22 of the transport conveyor.

The pushing device 51 includes a pair of left and right support arms 52.
A pushing plate 53 is provided therebetween, and the support arm 52 can be swung back and forth by a telescopic cylinder 54.
The pushing plate 53 has a considerable area. In the pushing device 51, when the telescopic cylinder 54 is in the contracted state, the pushing device 51 shown in FIG.
0 (FIG. 11, FIG. 13, FIG. 14) as shown in FIG.
The tip end 53a of the push-in plate 53 is close to the push-in portion S, while the tip end 53a of the push-in plate 53 is largely separated from the push-in portion S as shown in FIG. Then, in the state where the pushing plate 53 is swung to the pushing portion S side, as shown in FIG. 11, the cloth Y supplied from the transporting conveyor end portion 22 comes to be fed to the outside of the pushing plate 53, and on the other hand, The pushing plate 53 has the pushing portion S.
In a state where the cloth Y is oscillated to the side away from, the cloth Y supplied from the transport conveyor end portion 22 can be dropped into the space between the pushing plate 53 and the pushing portion S as shown in FIG. In the following description, the direction in which the pushing plate 53 moves to the pushing portion S side is called right movement, and conversely, the direction in which the pushing plate 53 separates from the pushing portion S side is called left movement.

The pushing device 6 is constructed so that the pushing plate 61 can be moved back and forth by a telescopic cylinder (a pair of left and right) 62. Then, as shown in FIG. 10, when the pushing plate 53 of the pushing device 51 is moved to the right and the pushing plate 61 of the pushing device 6 is retracted (the telescopic cylinder 62 is contracted), the pushing plate 61 and the pushing plate 53 are moved. When the pushing plate 61 moves forward with the pushing plate 53 moved rightward as shown in FIG. 11, when the pushing plate 61 moves forward, the cloth Y along the left side surface of the pushing plate 53 is pushed by the pushing plate 61. Press both plates 6
The cloth Y is sandwiched between 1 and 53. Further, the telescopic cylinder 62 on the side of the pressing device 6 employs one having a smaller pressing force than the telescopic cylinder 54 on the side of the pushing device 51, and as shown in FIG. When the telescopic cylinder 54 on the side of the pushing device 51 extends from the state in which the pressing device 51 is sandwiched, the pushing force allows the pushing plate 53 to move to the left while reducing the telescopic cylinder 62 on the side of the pressing device 6 as shown in FIG. It has become.

At the terminal end 22 of the conveyor 2, the leading edge of the cloth Y conveyed by the conveyor 2 (the leading edge Y).
A detector 59 is provided which detects when (a) reaches the transport conveyor end 22. In the following description, this detector 59 will be referred to as a tip detector 59. Then, the folding device 5 is configured such that when a predetermined short time has elapsed from the time when the cloth tip Ya is detected by the tip detector 59 (the state of FIG. 10) (1/4 fold of cloth Y). a has advanced to a position corresponding to the tip 53a of the pushing plate),
Telescopic cylinder 6 of pressing device 6 by signal from controller
As shown in FIG. 11, the push plate 61 pushes and clamps the position of the cloth near the front edge portion Ya to the push plate 53 side as shown in FIG. It should be noted that at the time when the cloth front edge portion Ya closer position is sandwiched between the plates 61 and 53, the 1/4 fold portion a of the cloth Y accurately corresponds to the tip end 53a of the pushing plate 53.

In the folding device 5, the telescopic cylinder 62 of the pushing device 51 is extended at almost the same time when the telescopic cylinder 62 of the pressing device 6 completes the extension operation, and the pushing plate 53 is moved to the left. At this time, the telescopic cylinder 62 of the pressing device 6 is contracted by the leftward movement pressure of the pushing plate 53, and the plates 53 and 61 are changed to the state of FIG. 12 while holding the cloth front edge portion Ya side therebetween. At this time, it is desirable that the moving speed of the pushing plate tip 53a be equal to the traveling speed of the conveyor 2. In this way, when the pushing plate 53 is moved to the left while the cloth front edge portion Ya side is sandwiched between the plates 61 and 53, the 1/4 fold portion a of the cloth Y may be displaced from the pushing plate tip 53a. There is no.

Next, as shown in FIG. 12, after the push-in plate 53 has moved to the left, the push-in device 51 is maintained in that posture for the time during which the cloth Y is transferred by 1/2 length. During this waiting time, the intermediate portion of the cloth Y delivered from the transport conveyor end portion 22 is U-shaped within the interval between the transport conveyor end portion 22 and the pressing plate 53 as shown by the chain line in FIG. Sent to. Immediately after the waiting time has elapsed, the telescopic cylinder 54 of the pushing device 51 is contracted (the pushing device 6 remains the same), and the pushing plate 53 moves to the right as shown in FIG. The 1/4 fold portion a and the 3/4 fold portion c of Y are pushed into the pushing portion S.
At that time, the 2/4 folded portion b of the cloth Y is located at the lowermost portion of the U-shaped hanging portion. When the 1/4 fold portion a and the 3/4 fold portion c of the cloth Y are pushed into the pushing portion S, the upper and lower conveyors 2 and 50 are respectively traveling in the arrow directions.
As shown in FIG. 4, the cloth Y is folded in four and is fed between the two conveyors.

By the way, in the cloth folding machine of this embodiment, even if two kinds of long and short cloths Y (bath towel and face towel) are indiscriminately supplied on the supply side, the long and short cloths Y
Can be folded in four at correct positions (positions of four equal parts). That is, it is necessary to change the folding position when the length of the cloth is different. In this cloth folding machine, first, the rear end detector 49 and the end portion 22 of the conveyer conveyor provided at the lower part of the start end portion 21 of the conveyer conveyor. The cloth length is sequentially calculated individually by the controller based on each detection data from the tip detector 59 provided on the upper part of the. This cloth length calculation method is carried out based on the traveling speed of the conveyor 2 (for example, 30 m / min) and the distance between the detectors 49 and 59 (for example, 2 m).
The time required to run the distance between 9 (eg 4 seconds)
Is input to the controller as a constant, and from the time when the trailing edge detector 49 detects the cloth trailing edge Yb as shown in FIG. 9 on the transport conveyor starting edge 21 side, as shown in FIG. This can be achieved by calculating the time until 59 detects the tip Ya of the cloth Y, subtracting the elapsed time from the above constant, and converting the time difference into the travel distance of the conveyor 2. Then, if the length of the cloth Y reaching the end portion 22 of the conveyer conveyor can be discriminated, the conveyer conveyor 2 travels a distance of 1/4 of the length of the cloth Y from the time when it is detected by the front end detector 59. Immediately after the lapse of time (actually slightly earlier than that), the above-mentioned operations of the pressing device 6 and the pressing device 51 are performed. The waiting time between the pushing plate 53 of the pushing device 51 moving leftward and rightward is naturally adjusted according to the cloth length.

The folding cloth Y'folded in the folding device 5 into four folds is the running portion 2 on the lower surface side of the conveyor 2.
It is transferred to the fixed position laminating device (the dropping device 7 or 8) by the frictional force with a. In the cloth folding machine of this embodiment, the falling device 7 (this is the first
The dropping device) is for long cloths, and the dropping device 8 (this is called the second dropping device) on the side far from the transport conveyor end portion 22 is for short cloths.

The first and second drop devices 7 and 8 are shown in FIG.
5 and FIG. 16 have the same structure. That is, each of the dropping devices 7 and 8 includes two opening / closing plates 7
1, 71 (81, 81) and one telescopic cylinder 75
(85) and a pair of bilaterally symmetrical bent links that connect the opening / closing plates 71, 71 (81, 81) and the telescopic cylinder 75 (85). In the first drop device 7,
As shown in FIG. 15, two opening / closing plates 71, 71 are arranged side by side in the length direction of the conveyer conveyor 2, while in the second dropping device 8, as shown in FIG. Board 8
1 and 81 are arranged side by side in the width direction of the conveyor 2.

Two open / close plates 71, 71 (81, 81)
Have their outer ends pivotally supported so that the abutting end side can swing up and down. The bent links are three links 72, 73, 74 (82, 8) on each side.
(3, 84) as one set, and is composed of two sets of symmetrical shapes. The telescopic cylinder 75 (85) is installed in a vertical posture at an intermediate position between the left and right bent links. Then, each opening / closing plate 71, 7 is connected with each set of links.
The lower surface of No. 1 (81, 81) and the rod tip of the telescopic cylinder 75 (85) are connected.

As shown in FIG. 2, FIG. 15 and FIG. 16, the folding cloths Y ′ are provided above the respective dropping devices 7 and 8 when the folding cloth Y ′ reaches a predetermined position on the dropping device. Stops 76 and 86 for stopping Y'are provided. It should be noted that the selection of each of the stopping devices 76 and 86 is made by determining the length of the cloth Y supplied to the folding device 5 portion by the controller and then detecting one of the stopping devices based on the length determination signal. This is achieved by making the devices 79, 89 detectable.

Each of the stopping devices 76 and 86 is of a type in which a pressing plate 77 (87) is vertically swung by a telescopic cylinder 78 (88). Then, each of the stopping devices 76 and 86 detects the folding cloth Y ′ by the detector 79 (89) when the folding cloth Y ′ reaches a predetermined position on the dropping device 7 (8) (actually just before reaching). , The retracting cylinder 78 (88) is contracted based on the detection signal, and the pressing plate 7
7 (87) presses the folding cloth Y'on both opening / closing plates 71, 71 (81, 81) of the dropping device 7 (8) to stop it. The stop position of the folding cloth Y'is
The folding cloths Y ′ are provided on both opening / closing plates 71, 71 (81, 81).
It is a position that is placed evenly above.

In each of the dropping devices 7 (8), when the telescopic cylinder 75 (85) is contracted to the maximum extent, the respective opening / closing plates 7, 71 (81, 81) maintain the horizontal posture (closed posture), When the telescopic cylinder 75 (85) is fully extended, each opening / closing plate is opened to a substantially vertical posture as indicated by reference numerals 71c, 71c (81c, 81c).

In this way, both opening / closing plates 71, 71 (81,
81) and the telescopic cylinder 75 (85) are connected by a bilaterally symmetrical bending link, each opening / closing plate is, for example, denoted by reference numerals 71a, 71a during opening / closing of the opening / closing plate (especially during opening operation).
(81a, 81a) or 71b, 71b (81b, 81
As shown in b), they open at a constant speed.
Therefore, the folding cloth Y ′ is attached to both the opening / closing plates 71, 71 (81,
81) When stopped at the correct position above (positions where exactly 1/2 is placed on both opening and closing plates), both ends Yd and Yd of the folding cloth Y ′ are set to the opening and closing plates when the opening and closing plates are opened. At the same time, the folding cloths Y'will come off from the front end, and the folding cloth Y'will always fall into a fixed position. By this, the drop device 7
The folding cloths Y'and Y'which are sequentially dropped from (8) can be stacked on the carry-out conveyor 16 (18) in a completely polymerized state.

The carry-out conveyor 16 (18) is provided with a dropping device 7
The number of times the folding cloth Y'falls from (8) is counted by a counter, and every time it reaches a predetermined number (for example, 20 to 30 times), the motor 17 (19) intermittently makes one pitch A (for example, 300 mm). Is designed to work properly.

In the cloth folding machine of this embodiment, with the above-mentioned structure, the cloth Y is simply placed on the stand 31 of the holding device 30 in the standby position with the front edge Ya of the cloth Y stretched. The cloth Y can be automatically folded into four, and the folded cloth Y'can be sequentially laminated at predetermined positions. That is, when the cloth leading edge portion Ya is placed on the placing table 31 at the standby position, the cloth leading edge portion Ya is adsorbed on the placing table 31 (FIG. 6). It retreats faster than the speed (Fig. 7) → At that time, the lower part of the cloth Yc is spread vertically and horizontally by the spreading device 4 and the lower part of the cloth Yc is stretched.
The front edge Ya of the cloth is rubbed by the frictional force between the front end 21 of the conveyor and the conveyor.
Is separated from the placing table 31 (FIG. 8) → immediately after that, the holding device 30 immediately advances to the original standby position and enables the next cloth Y placing operation (FIG. 9). Also, as shown in FIG.
When the leading edge Ya of the cloth is detected by the detector 59 at the end portion 22 of the conveyer conveyor, the folding device 5 is sequentially operated by the folding device 5 shown in FIGS.
Operate as shown in and fold the cloth Y into four folds →
The folding cloth Y'is conveyed to a predetermined dropping device 7 (8), and then the folding cloth Y'is dropped and stacked on the unloading conveyor 16 (18) by the dropping device 7 (8) (Fig. 15, FIG. 16). In this way, the carry-out conveyor 16
(18) The laminated body Y ″ that has been dropped and laminated on top has the edges of the folding cloths Y ′ aligned neatly and is visually beautiful.

[0048]

According to the cloth fixed-position laminating apparatus of the present invention,
To connect one end of each of a pair of bilaterally symmetrical bending links (72, 73, 74) to the pair of opening / closing plates 71, 71, and to simultaneously operate the bending links with one telescopic cylinder 75. Since both opening / closing plates 71, 71 are opened / closed by the opening / closing plate 71, the opening / closing plates 71, 71 can be opened / closed at the same time and at the same speed when the expanding / contracting cylinder 75 expands / contracts. ′ Can be sequentially dropped and stacked at the same position. Therefore, many cloths Y '
When the layers are laminated, the edges thereof are neatly aligned, and there is an effect that a visually beautiful laminated body can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view of a cloth folding machine including a fixed-position laminating apparatus according to an embodiment of the present invention.

FIG. 2 is a view corresponding to a line II-II in FIG.

FIG. 3 is a right side view of FIG. 2;

FIG. 4 is a perspective view of the cloth supply device portion of FIG. 1.

FIG. 5 is an enlarged sectional view taken along line VV of FIG. 4;

FIG. 6 is an enlarged view of the cloth supply device portion of FIG. 2.

FIG. 7 is a state change diagram from FIG.

8 is a state change diagram from FIG. 7. FIG.

9 is a state change diagram from FIG. 8. FIG.

10 is an enlarged view of the folding device portion of FIG.

FIG. 11 is a state change diagram from FIG.

FIG. 12 is a state change diagram from FIG.

FIG. 13 is a state change diagram from FIG.

14 is a state change diagram from FIG.

FIG. 15 is an enlarged view of the first dropping device portion of FIG.

16 is an enlarged view of XVI-XVI in FIG.

FIG. 17 is a state change diagram of the cloth folded by the cloth folding machine.

FIG. 18 is a cross-sectional view of a conventional cloth folding machine.

FIG. 19 is an enlarged view of a fixed-position laminating device portion in the cloth folding machine of FIG. 18.

[Explanation of symbols]

1 is a machine frame, 2 is a conveyer, 3 is a supply device, 4 is a stretching device, 5 is a folding device, 6 is a pressing device, 7 and 8 are dropping devices, 21 is a starting end portion, 22 is a terminating end portion, and 71 is an opening / closing unit. Board, 72
˜74 are links, 75 is a telescopic cylinder, and 76 is a cloth stopping device.

Claims (1)

[Claims] 1. A pair of opening / closing plates (71, 7) on which cloths (Y ') conveyed by a conveyor can be transferred.
1) and a stop device (76) for stopping the cloth (Y ') at a fixed position straddling each of the opening / closing plates (71, 71).
A fixed-position laminating device for cloth, comprising: an opening / closing device for simultaneously opening / closing each opening / closing plate (71, 71), wherein each opening / closing plate (71, 71) swings up and down with its abutting side up and down. On the other hand, the opening / closing device is installed in a state where it can be installed.
74) and one telescopic cylinder (75) for simultaneously operating both of the bent links (72, 73, 74).